From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Burgess Subject: Re: Date: Thu, 02 Apr 2009 06:35:55 -0700 Message-ID: <1238679355.4604.19.camel@cichlid.com> References: <20090402041606.HVVA17102.cdptpa-omta03.mail.rr.com@Leslie> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20090402041606.HVVA17102.cdptpa-omta03.mail.rr.com@Leslie> Sender: linux-raid-owner@vger.kernel.org To: lrhorer@satx.rr.com Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On Wed, 2009-04-01 at 23:16 -0500, Lelsie Rhorer wrote: > The issue is the entire array will occasionally pause completely for about > 40 seconds when a file is created. I had symptoms like this once. It turned out to be a defective disk. The disk would never return a read or write error but just intermittently took a really long time to respond. I found it by running atop. All the other drives would be running at low utilization and this one drive would be at 100% when the symptoms occurred (which in atop gets colored red so it jumps out at you)